This Burnham Commercial Modification Kit is designed for field use with natural gas. The kit includes all necessary components for converting a propane-fueled system to a natural gas system, ensuring compatibility and efficiency. It is specifically designed for the year 2013 models, ensuring precise fit and optimal performance. The kit is composed of high-quality materials that are resistant to wear and tear, providing longevity and reliability in operation. It is important to note that this modification should be performed by a professional or someone with technical knowledge to ensure safety and proper installation.